We are not very good at this. Our success rests on our international experience and on our ability to read the market. And I contest the notion that you can only succeed in China when you are well-connected. Neither my husband nor I are "princelings" - children of influential people, that is. And yet China has enabled us to succeed.

We have become so quick and effective in building things today. It would be easy to build another Pyramid of Giza or another Great Wall. But these buildings haven't withstood the test of time because of their building quality. They stand tall because they have a symbolic value, they represent a culture.

It's a good thing that it is getting simpler to register a company in China, it is good that the exchange rate of our currency is getting more flexible and that it's getting easier for Chinese businesspeople to travel. All of this opens up our economy.

The question is not about whether it will work or not. It's how quickly we can pull it off. Structural change will happen. When economies grow, there comes a time when you cannot rely on investment alone. We had that. The return on investment is becoming less and less. So we have to change. The old model doesn't work anymore. It's a question of speed.

I am a runner. Last October, there was a marathon here in Beijing. I didn't participate this time, but friends told me that the run wasn't prepared too well. The organizers had only arranged about three hours' worth of food and water supplies. Most people don't finish within three hours, however. Too bad for them - or so it seemed. In fact, however, even those finishing last were perfectly taken care of, particularly during the fourth and fifth hour when demand is highest.

When we started out, we didn't really think that the era of great opportunity would end one day. We were much too busy developing our companies. But in today's China you can build a city, even a mega-city like Beijing or Shanghai, within 10 or 15 years. And then you are done. So in real estate development, the Gründerzeit is over. But that is not the case in other sectors.

Because people along the route had realized that there was demand and quickly organized supply. That's so Chinese. In a well-organized country like Germany, such a problem may not have arisen in the first place, but in China people immediately recognized an opportunity.